Activated carbon for odor control

Abstract

An activated carbon-metal oxide matrix is disclosed. The activated carbon-metal oxide matrix may be obtained by a method including the steps of: preoxidizing a carbon material, grinding the preoxidized carbon material; mixing the ground preoxidized material with a metal oxide to form a carbon mixture; extruding the carbon mixture; carbonizing and activating the extrudate. The activated carbon-metal oxide matrix may be used to remove odorous compounds, acidic gases, and volatile organic compounds from a gas.

1. A waste treatment facility, comprising
 a source of a gaseous stream comprising an odorous compound from one of a sewage treatment plant, a refinery, and a pulp and paper mill; and 
 an odor treatment unit comprising;
 an inlet fluidly connected to the source of the gaseous stream; 
 a packed bed of an activated carbon matrix positioned within the odor treatment unit to provide a gas velocity of the gaseous stream through the bed of about 20 fpm to about 80 fpm, wherein the activated carbon matrix comprises an activated carbon and a metal oxide uniformly dispersed within the activated carbon, wherein the metal oxide is selected from the group consisting of the oxides of Ba, Mg, Ca, and combinations thereof; and 
 a treated gaseous stream outlet downstream of the packed bed; 
 
 wherein the activated carbon matrix has an ignition temperature of about 450° C. 
 
     
     
       2. The waste treatment facility of  claim 1 , wherein the odor treatment unit is a column having a gaseous stream inlet, and a treated gaseous stream outlet. 
     
     
       3. The waste treatment facility of  claim 1 , wherein the source of the gaseous stream is a sewage treatment plant. 
     
     
       4. The waste treatment facility of  claim 3 , wherein the gaseous stream comprises a sulfur-containing substance. 
     
     
       5. The waste treatment facility of  claim 4 , wherein the sulfur-containing substance is hydrogen sulfide.